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Verdcourt, B. (1974). On the systematic position of some East African Helicidae – 3. Revue de Zoologie et de Botanique Africaine 88: 461–469.
Verdcourt, B. (1974). On the systematic position of some East African Helicidae – 3. Revue de Zoologie et de Botanique Africaine 88: 461–469.
